755780940 has 72 divisors (see below), whose sum is σ = 2294794320. Its totient is φ = 201343104.

The previous prime is 755780933. The next prime is 755780941. The reversal of 755780940 is 49087557.

755780940 is a `hidden beast` number, since 7 + 557 + 8 + 0 + 94 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (755780941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 320847 + ... + 323193.

Almost surely, 2^755780940 is an apocalyptic number.

It is an amenable number.

755780940 is an abundant number, since it is smaller than the sum of its proper divisors (1539013380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

755780940 is a wasteful number, since it uses less digits than its factorization.

755780940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4151 (or 4146 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The square root of 755780940 is about 27491.4703135354. The cubic root of 755780940 is about 910.8886942823. Note that the first 3 decimals are identical.

The spelling of 755780940 in words is "seven hundred fifty-five million, seven hundred eighty thousand, nine hundred forty".